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Combined twin-screw vacuum pump

A vacuum pump, twin-screw technology, applied in the direction of pumps, pump components, rotary piston pumps, etc., can solve the problems of short service life, high maintenance cost, high noise, etc., to improve service life, prolong service life, and long service life Effect

Inactive Publication Date: 2016-11-09
YANGZHOU RISHANG VACUUM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the requirements of industrial development and environmental protection, traditional oil-sealed vacuum pumps and piston pumps, claw pumps, and scroll pumps in dry pumps can no longer meet the current technical requirements in many aspects, such as: oil-sealed vacuum pumps cannot be used for gas recovery , Can not be used for clean vacuum requirements
Other dry pumps have disadvantages such as high energy consumption, high noise, low vacuum degree, short service life, difficult maintenance and high maintenance costs.

Method used

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  • Combined twin-screw vacuum pump

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Embodiment Construction

[0008] Such as figure 1 As shown, the composite twin-screw vacuum pump includes a motor 1, a pair of mutually meshing screws 2, a screw sleeve 3, a coupling 5, an air inlet, and an air outlet. The pair of screws 2 are respectively a driving screw 6 and a driven screw. 7. The housing end of the motor 1 is connected to the motor pump head connecting flange 8, and the front end of the motor pump head connecting flange 8 is connected to the fan cover 9, and the front end of the fan cover 9 is connected to the near-end oil tank 10, and the input end of the drive screw 6 The output end of the motor 1 is connected through the coupling 5, the coupling 5 is set in the fan cover 9, the motor and the pump head connection flange 8, the fan blade 11 is arranged in the fan cover 9, and the fan blade 11 is coaxially connected to the coupling. On the shaft device 5; the input shaft of the driving screw rod 6 is connected with the first gear 12, the input end of the driven screw rod 7 is conne...

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Abstract

The invention provides a combined twin-screw vacuum pump and relates to the technical field of manufacturing of dry vacuum pumps. The combined twin-screw vacuum pump comprises a motor, a pair of meshed screws, a screw sleeve, bearings, a coupling, an oil tank, gears, a fan cover and fan blades, wherein the screws are served as a driving screw and a driven screw respectively; the tooth profiles of the meshed surfaces of the driving screw and the driven screw are the same; each of the driving screw and the driven screw is provided with a circle of first equal-screw-pitch spiral teeth of which the axial length is relatively large; a circle of gradient-screw-pitch spiral teeth are arranged behind the first equal-screw-pitch spiral teeth; a plurality of second equal-screw-pitch spiral teeth of which the axial length is relatively small are arranged behind the gradient-screw-pitch spiral teeth; the maximum portion of the initial segment of the gradient-screw-pitch spiral teeth is the same as the screw pitch of the first equal-screw-pitch spiral teeth; and the screw pitch of the final segment of the gradient-screw-pitch spiral teeth is the same as the screw pitch of the second equal-screw-pitch spiral teeth. The combined twin-screw vacuum pump is high in air extraction speed, high in vacuum degree, low in energy consumption and long in service life.

Description

technical field [0001] The invention relates to the technical field of dry vacuum pump manufacture. Background technique [0002] With the requirements of industrial development and environmental protection, traditional oil-sealed vacuum pumps and piston pumps, claw pumps, and scroll pumps in dry pumps can no longer meet the current technical requirements in many aspects, such as: oil-sealed vacuum pumps cannot be used for gas recovery , Can not be used for clean vacuum requirements. Other dry pumps have the disadvantages of high energy consumption, high noise, low vacuum, short service life, difficult maintenance and high maintenance costs. Contents of the invention [0003] In order to solve the above problems, the utility model provides a composite twin-screw vacuum pump. [0004] The invention includes a motor, a pair of mutually meshing screws, a screw sleeve, a bearing, and a shaft coupling. The pair of said screws are respectively a driving screw and a driven scre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/16F04C25/02F04C29/00
CPCF04C18/16F04C25/02F04C29/00
Inventor 贾怀军
Owner YANGZHOU RISHANG VACUUM EQUIP